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Microbiology Test 3 > Bacterial classification > Flashcards

Bacterial classification Flashcards

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Biology 101 flashcards
1
Q

Micrococcus G+

A

harmless, ubiquitous, maybe pigmented

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2
Q

Staphylococcus G+

A

resembles grapes, aerotolerant cocci, resistant to drying out, normal flora, nosocomial infections

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3
Q

Staphylococcus G+

A

Aureus (worst), epidermidis, intermedius, saprophyticus

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4
Q

Staphylococcus aureus G+

A

abscesses with pus (boils, acne, impetigo and carbuncles), pneumonia, osteomyelitis, endocarditis, cystitis, septicemia, pyleonephritis (kidney inflammation)

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5
Q

Staphylococcus aureus can produce…

A

coagulase, leukocidin, hemolysins, enterotoxin

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6
Q

MRSA

A

multi-drug resistant, methicilin resistant (beta lactum class of antibiotics resistance)

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7
Q

VRSA

A

vancomycin resistant, TREATMENT: Linesolid - very harsh, inhibits protein synthesis, elevates liver enzymes, GI updates, abnormally small # of platelets

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8
Q

Streptococcus G+

A

circular translucent to opague colonies, encapsulated, G+

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9
Q

Streptococcus classification

A

Alpha (Partial Destruction)- reduces RBC, incomlete lysis of RBC, olive green around colonies. Beta “Complete Descruction”

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10
Q

Streptococcus producing extracellular metabolites

A

Hemolysins- act on RBCs

Leucocidins- destroy phagocytes

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11
Q

Bacillus G+

A

natural flora, opportunistic pathogen

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12
Q

Bacillus anthracis

A

ANTHRAX, only bacteria whose capsule is composed only of protein- difficult to break down (stable spore and can survive for decades)

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13
Q

Bacillus Species

A

only one responsible for antibiotics being harvested from it, G+

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14
Q

Bacillus Cereus

A

formation of enterotoxin in contaminated food causes food poisoning

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15
Q

Bacillus subtilis

A

produces the antiobiotic “Bacitracin” (cell wall synthesis)

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16
Q

Bacillus brevis

A

organism that is the source of the natural antibiotics “Gramicidin” and “Tyrocidin”

17
Q

Bacillus polymyxa

A

produces natural antibiotic “Polymyxin B”

18
Q

Clostridium G+

A

obligate anaerobics, spore former, found in soil, secrete powerful exotoxings, G+

19
Q

Corynebacterium G+

A

club shaped rods, 1 or both ends swollen, diphtheria, G+

20
Q

Lactobacillus G+

A

commonly found in yogurt, commercially used for production of sauerkraut, pickles, buttermilk and yogurt, G+

21
Q

Mycobacteria G+

A

weakly gram positive, mycolic acid found in cell walls, acid-fast stain used, TB and leprosy

22
Q

Spirochetes G-

A

helical shaped- corkscrew, axial filaments- endoflagella, teponema pallidum- syphillis, borrella burgdorferi- Lyme disease

23
Q

Pseudomonas G-

A

oppurtunistic pathogens, 1 in 10 nosocomial infections, G-, soap residue and cap liner adhesive growth

24
Q

Legionella G-

A

common in streams, warm water supply lines in hospitals, water in the cooling towers of AC, ability to survive aquatic amoebae, G-

25
Q

Neisseria G-

A

always in pairs, non-motile diplocci, gonorrhoeae, meningitis, G-

26
Q

Bordetella G-

A

mammalian parasite and pathogen, whooping cough, G-

27
Q

Salmonella G-

A

enteric bacteria, inhabitants of GI tracts of mammals (esp. poultry and cattle), typhoid fever, G-

28
Q

Escherichia G-

A

enteric bacteria, oppurtunistic pathogen, E. coli- causes UTI, traveler’s diarrhea and foodborne diseases, G-

29
Q

Enterobacter G-

A

enteric, nosocomial, oppurtunistic pathogen, G-

30
Q

Serratia G-

A

oppurtunistic pathogen, red pigmentation, (catheters, saline irrigation solutions, other supposedly sterile solutions) G-

31
Q

Proteus G-

A

enteric, swarms- grows in concentric patters, oppurtunistic pathogen, peritrichous (flagella all around) G-

32
Q

Yersinia G-

A

oppurtunistic pathogen, transmitted via fleas of rats and squirrels, yersinia pestis - bubonic plague, G-

33
Q

Vibrio G-

A

comma shaped, vibrio cholera, G-

34
Q

Haemophilus G-

A

requires blood as a nutrient, haemophilus influenza - bacteria meningitis, G-

35
Q

Bacteroides G-

A

normal flora in mouth and intestines (we have a lot) G-

36
Q

Rickettsias G-

A

obligate intracellular parasite, causes fevers, using lice, fleas, mites, or ticks as carriers, G-

37
Q

Chlamydias G-

A

very small, all species are parasites, obligate intracellular parasite, STDs, G-

Microbiology Test 3 (5 decks)

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